- any of several tropical, freshwater fishes of the family Characidae, often kept in aquariums.
Origin of tetra
- a combining form meaning “four,” used in the formation of compound words: tetrabranchiate.
Also especially before a vowel, tetr-.
Origin of tetra-
< Greek, combining form of téttara, neuter of téttares four
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for tetra
From a purely environmental standpoint, the statistics in favor of Tetra Pak packaging are astounding.
An ambitious Swiss packaging company, Tetra Pak, presents another alternative to Bag-in-Box.
I had my first taste of Tetra Pak wine from a neon green package labeled “Bandit” a couple of years ago.
In addition, a one-liter Tetra Pak weighs less than a pound.
Eva and her husband Hans Kristian Rausing, heir to the $10bn Tetra Pak fortune, were both friends of Prince Charles.Body of Eva Rausing, Friend of Prince Charles, May Have Lain Undiscovered For A Week
July 12, 2012
- any of various brightly coloured tropical freshwater fishes of the genus Hemigrammus and related genera: family Characidae (characins)
C20: short for New Latin tetragonopterus (former genus name), from tetragon + -o- + -pterous, from Greek pteron wing
before a vowel tetr-
Word Origin and History for tetra
word-forming element meaning "four," from Greek tetra-, combining form of tettares, tessares "four" (see four).
Online Etymology Dictionary, © 2010 Douglas Harper
- Composed of or containing four atoms, molecules, or groups:tetrasaccharide.